JP4781251B2 - Camera blade drive - Google Patents

Camera blade drive Download PDF

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Publication number
JP4781251B2
JP4781251B2 JP2006341597A JP2006341597A JP4781251B2 JP 4781251 B2 JP4781251 B2 JP 4781251B2 JP 2006341597 A JP2006341597 A JP 2006341597A JP 2006341597 A JP2006341597 A JP 2006341597A JP 4781251 B2 JP4781251 B2 JP 4781251B2
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Prior art keywords
rotor
blade
substrate
thickness
coil
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Expired - Fee Related
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JP2006341597A
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JP2008152129A (en
Inventor
満 鈴木
彰浩 伊藤
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Seiko Precision Inc
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Seiko Precision Inc
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Priority to JP2006341597A priority Critical patent/JP4781251B2/en
Priority to KR1020097002760A priority patent/KR101055433B1/en
Priority to PCT/JP2007/073951 priority patent/WO2008075597A1/en
Priority to CN2007800351928A priority patent/CN101517476B/en
Publication of JP2008152129A publication Critical patent/JP2008152129A/en
Priority to US12/365,454 priority patent/US7670069B2/en
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Publication of JP4781251B2 publication Critical patent/JP4781251B2/en
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
    • G03B9/26—Blade or disc rotating or pivoting about axis normal to its plane incorporating cover blade or blades

Description

本発明は、カメラ用羽根駆動装置に関する。   The present invention relates to a camera blade driving device.

従来から、カメラのシャッタ羽根の駆動源としては、電磁アクチュエータが採用されている（特許文献１参照）。図５は、電磁アクチュエータを駆動源として採用した場合の、従来のカメラ用シャッタ駆動装置の構成を示す断面図である。このようなカメラ用羽根駆動装置は、励磁用のコイル１４０と、周方向に複数の磁極に着磁されたロータ１２０と、ロータ１２０を回動自在に支持する軸１５２と、励磁用のコイル１４０へ通電によりロータ１２０に対して磁力を生じるステータ１１０などから構成される電磁アクチュエータと、この電磁アクチュエータを保持すると共に撮影用の開口（不図示）が形成されている上基板１６０及び下基板１５０と、下基板１５０と羽根押え板１８０との間に配置された羽根１７０、１７１、１７２、１７３などから構成される。   Conventionally, an electromagnetic actuator has been adopted as a driving source for shutter blades of a camera (see Patent Document 1). FIG. 5 is a cross-sectional view showing a configuration of a conventional camera shutter drive device when an electromagnetic actuator is employed as a drive source. Such a camera blade driving device includes an exciting coil 140, a rotor 120 magnetized in a plurality of magnetic poles in the circumferential direction, a shaft 152 that rotatably supports the rotor 120, and an exciting coil 140. And an upper substrate 160 and a lower substrate 150 which hold the electromagnetic actuator and have an imaging opening (not shown) formed therein. The blades 170, 171, 172, and 173 are disposed between the lower substrate 150 and the blade pressing plate 180.

ロータ１２０には、ロータ１２０と一体に回転する出力部材１３０が設けられており、この出力部材１３０にピン部１３１が設けられている。そしてピン部１３１はロータ１２０の駆動力を羽根１７０〜１７３に出力する。これにより、羽根１７０〜１７３が撮影用の開口を開閉する。また羽根室を構成している下基板１５０と羽根押え板１８０のいずれにもピン部１３１の回動を逃がすための開口部１５１、１８１が設けられている。   The rotor 120 is provided with an output member 130 that rotates integrally with the rotor 120, and a pin portion 131 is provided on the output member 130. And the pin part 131 outputs the driving force of the rotor 120 to the blade | wings 170-173. Thereby, the blades 170 to 173 open and close the opening for photographing. Also, openings 151 and 181 for releasing the rotation of the pin portion 131 are provided in both the lower substrate 150 and the blade pressing plate 180 constituting the blade chamber.

特開２００５−１７３３５５号公報JP 2005-173355 A

しかしながら、このようなカメラ用羽根駆動装置は、ロータ１２０の回動軸線方向上に重ねて羽根が配置されている。このため、ロータ１２０の軸線方向での厚みが増大する。従って、このようなカメラ用羽根駆動装置を採用する電子機器への配置の自由度が制限されていた。また羽根室を構成している下基板１５０と羽根押え板１８０のいずれにもピン部１３１の作動領域を逃げる円弧状の開口部１５１、１８１があり、これらの開口部は撮影用の開口に次ぐ大きな開口のためゴミが羽根室内に進入するおそれがあった。そして、進入したゴミが羽根の動作に影響を与える可能性があった。   However, in such a camera blade drive device, the blades are arranged so as to overlap with each other on the rotation axis direction of the rotor 120. For this reason, the thickness of the rotor 120 in the axial direction increases. Therefore, the degree of freedom of arrangement in an electronic apparatus that employs such a camera blade drive device has been limited. Further, both the lower substrate 150 and the blade pressing plate 180 constituting the blade chamber have arc-shaped openings 151 and 181 that escape the operation area of the pin portion 131, and these openings are next to the opening for photographing. Due to the large opening, there was a risk that garbage could enter the blade chamber. In addition, there is a possibility that the dust that has entered may affect the operation of the blades.

そこで、本発明は、薄型化され、外部からのゴミの進入が少ないカメラ用羽根駆動装置を提供することを目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide a camera blade driving device that is reduced in thickness and has little ingress of dust from the outside.

上記目的は、開口を有する基板と、前記基板に設けられ、前記開口を開閉する羽根と、前記基板に設けられ、前記羽根を駆動する駆動源とを備え、前記駆動源は、周方向に複数の磁極に着磁され、軸を中心に回動可能なロータと、前記ロータに対して磁力を生じるステータと、前記ステータに設けられ、前記ステータを励磁するコイルとを含み、前記ロータは、前記ロータの回動中心から外側へ延伸する腕部と、前記羽根と係合し前記腕部に立設したピン部とを有し、前記ロータ、前記腕部及び前記ピン部は、前記軸方向において前記コイルの厚み内に配置されている、ことを特徴とするカメラ用羽根駆動装置によって達成できる。
この構成により、羽根の駆動源である腕部及びピン部を有するロータは、ロータを回動自在に支持する軸方向のコイルの厚み内に配置されているので、カメラ用羽根駆動装置の軸線方向の厚みを減少することができる。これにより、カメラ用羽根駆動装置の薄型化を図ることができる。また上記構成により、カメラ用羽根駆動装置を羽根の回転中心軸を設けた基板により覆うことができる。基板にはピン部の回動を逃がすための開口部を設ける必要がないので外部からのゴミの進入を防止することができる。 The object includes a substrate having an opening, a blade provided on the substrate and opening and closing the opening, and a drive source provided on the substrate and driving the blade, and the drive source includes a plurality of drive sources in the circumferential direction. A rotor that is magnetized by the magnetic poles of the rotor and is rotatable about an axis, a stator that generates a magnetic force with respect to the rotor, and a coil that is provided on the stator and that excites the stator. An arm portion extending outward from the rotation center of the rotor, and a pin portion that engages with the blade and is erected on the arm portion, and the rotor, the arm portion, and the pin portion are arranged in the axial direction. This can be achieved by a camera blade driving device which is disposed within the thickness of the coil.
With this configuration, the rotor having the arm portion and the pin portion that are the blade driving source is disposed within the thickness of the axial coil that rotatably supports the rotor, so the axial direction of the camera blade driving device Can be reduced in thickness. Thereby, thickness reduction of the blade drive device for cameras can be achieved. Further, with the above-described configuration, the camera blade driving device can be covered with the substrate provided with the rotation center axis of the blade. Since it is not necessary to provide an opening for releasing the rotation of the pin portion on the substrate, entry of dust from the outside can be prevented.

上記構成において、前記ロータと腕部とは、別部材で形成される、構成を採用できる。
この構成によって、ロータの磁極の位置に対する腕部及びピン部の角度位置を調節することができる。これにより容易に角度位置の設計変更をすることができる。 The said structure WHEREIN: The said rotor and an arm part can employ | adopt the structure formed with another member.
With this configuration, the angular position of the arm portion and the pin portion with respect to the position of the magnetic pole of the rotor can be adjusted. Thereby, the design of the angular position can be easily changed.

上記構成において、前記駆動源を保持する上基板及び下基板を備え、前記羽根は、前記上基板及び下基板の間で保持される、構成を採用できる。
この構成により、駆動源を保持する部材と、羽根を保持するための部材とを併用することができ、更にカメラ用羽根駆動装置の軸線方向の厚みを減少することができると共に、部品点数を削減できる。 The said structure WHEREIN: The upper board | substrate and lower board | substrate which hold | maintain the said drive source are provided, and the said blade | wing can employ | adopt the structure hold | maintained between the said upper board | substrate and lower board | substrate.
With this configuration, a member that holds the driving source and a member that holds the blade can be used together, and the thickness of the camera blade driving device in the axial direction can be reduced and the number of parts can be reduced. it can.

薄型化され、外部からのゴミの進入が少ないカメラ用羽根駆動装置を提供できる。   It is possible to provide a camera blade driving device that is thin and has little ingress of dust from the outside.

以下、本発明に係る一実施形態について図面を参照して説明する。図１乃至図３は本実施例に係る、カメラ用羽根駆動装置であるカメラ用シャッタ駆動装置の構成を示した図である。図１は、撮影用の開口が全開状態でのカメラ用シャッタ駆動装置の正面図であり、図２は、撮影用の開口が全閉状態でのカメラ用シャッタ駆動装置の正面図であり、図３は、図１のＡ−Ａ断面図である。尚、図１及び図２は、後述する上基板６０については省略して示してある。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 to FIG. 3 are diagrams showing a configuration of a camera shutter driving device which is a camera blade driving device according to the present embodiment. FIG. 1 is a front view of the camera shutter driving device with the photographing opening fully opened, and FIG. 2 is a front view of the camera shutter driving device with the photographing opening fully closed. 3 is a cross-sectional view taken along the line AA in FIG. In FIG. 1 and FIG. 2, the upper substrate 60 described later is omitted.

本実施例に係るカメラ用シャッタ駆動装置は、電磁アクチュエータ、下基板５０、上基板６０、羽根７０などから構成される。図３に示すように、電磁アクチュエータ及び羽根７０は、下基板５０と上基板６０とによって形成された空間内に配置される。尚、図１及び図２においては、上基板６０については省略してある。   The camera shutter driving device according to this embodiment includes an electromagnetic actuator, a lower substrate 50, an upper substrate 60, a blade 70, and the like. As shown in FIG. 3, the electromagnetic actuator and blade 70 are disposed in a space formed by the lower substrate 50 and the upper substrate 60. In FIGS. 1 and 2, the upper substrate 60 is omitted.

電磁アクチュエータは、ステータ１０、ロータ２０、コイル４０等から構成される。
電磁アクチュエータは、Ｕ字状に形成されてその両端部に第１磁極部１１、第２磁極部１２を有するステータ１０、周方向に異なる２極に着磁され円筒形状を成すロータ２０、コイルボビン４１に巻回され通電により互いに異なる極性の第１磁極部１１及び第２磁極部１２を生じさせるコイル４０などを備えている。
上基板６０は、コイル４０の厚みを逃がすための孔部６３が形成されている。また、電磁アクチュエータの側部を囲うように側壁５４が形成されている。 The electromagnetic actuator includes a stator 10, a rotor 20, a coil 40, and the like.
The electromagnetic actuator is formed in a U shape and has a first magnetic pole portion 11 and a second magnetic pole portion 12 at both ends thereof, a stator 10 having two different poles in the circumferential direction, and a cylindrical rotor 20, a coil bobbin 41. And a coil 40 that generates the first magnetic pole part 11 and the second magnetic pole part 12 having different polarities when energized.
The upper substrate 60 is formed with a hole 63 for releasing the thickness of the coil 40. Moreover, the side wall 54 is formed so that the side part of an electromagnetic actuator may be enclosed.

また、ロータ２０の、回動中心軸方向の一方の端部には、ロータ２０の回動を外部へ出力する出力部材３０がロータ２０と一体に回転するように取り付けられている。ここで、ロータ２０は周方向に２極に着磁されており、出力部材３０とロータ２０の磁極との位置関係が所定位置となるよう出力部材３０がロータ２０に接着等により固定されている。これにより、出力部材３０はロータ２０と一体的に所定角度範囲を回動する。電磁アクチュエータは、下基板５０に立設された位置決め用の位置決めピン部５５により、位置決めがなされる。   An output member 30 that outputs the rotation of the rotor 20 to the outside is attached to one end of the rotor 20 in the direction of the rotation center axis so as to rotate integrally with the rotor 20. Here, the rotor 20 is magnetized in two poles in the circumferential direction, and the output member 30 is fixed to the rotor 20 by adhesion or the like so that the positional relationship between the output member 30 and the magnetic poles of the rotor 20 is a predetermined position. . As a result, the output member 30 rotates in a predetermined angle range integrally with the rotor 20. The electromagnetic actuator is positioned by positioning positioning pin portions 55 erected on the lower substrate 50.

ロータ２０は、下基板５０から一体に形成された軸部５２に貫通されて、回動自在に支持されている。   The rotor 20 passes through a shaft portion 52 formed integrally with the lower substrate 50 and is supported rotatably.

出力部材３０は、ロータ２０の撮像素子側の端部に固定され、ロータ２０の回動中心軸である軸部５２に対して垂直方向に外側に延伸する腕部３１と、その腕部３１から羽根７０に向けて光軸方向に立設されたピン部３２からなり、ロータ２０と固定された状態においてロータ２０、腕部３１及びピン部３２は、ロータ２０の回動中心軸方向においてコイル４０の厚み内Ｂの範囲（図３参照）で配置される。ピン部３２は、羽根７０の端部に形成された凹状の係合部７１と係合して、ピン部３２の揺動が、羽根７０に伝達される。この係合部７１は、ピン部３２を側部から挟み持つように形成されている。   The output member 30 is fixed to an end of the rotor 20 on the image sensor side and extends outward in the vertical direction with respect to the shaft portion 52 that is the rotation center axis of the rotor 20. The rotor 20, the arm portion 31, and the pin portion 32 are composed of a pin 40 that is erected in the optical axis direction toward the blades 70. It arrange | positions in the range (refer FIG. 3) within the thickness B. The pin portion 32 engages with a concave engagement portion 71 formed at the end of the blade 70, and the swing of the pin portion 32 is transmitted to the blade 70. The engaging portion 71 is formed so as to sandwich the pin portion 32 from the side portion.

ここで、図４にロータ２０、腕部３１、ピン部３２を同一部品で構成した例を示す。上記と同様に、ロータ８０はロータ８０の回動中心軸である軸部５２に対して垂直方向に外側に延伸する腕部３１と、その腕部３１から羽根７０に向けて光軸方向に立設されたピン部３２とを有し、ロータ８０と腕部３１及びピン部３２は、ロータ２０の回動中心軸方向においてコイル４０の厚み内Ｂの範囲（図３参照）で配置される。ピン部３２は、羽根７０の端部に形成された凹状の係合部７１と係合して、ピン部３２の揺動が、羽根７０に伝達される。この係合部７１は、ピン部３２を側部から挟み持つように形成されている。   Here, FIG. 4 shows an example in which the rotor 20, the arm portion 31, and the pin portion 32 are made of the same parts. In the same manner as described above, the rotor 80 stands in the optical axis direction from the arm portion 31 toward the blade 70 from the arm portion 31 extending outward in the vertical direction with respect to the shaft portion 52 that is the rotation center axis of the rotor 80. The rotor 80, the arm portion 31, and the pin portion 32 are arranged in a range within the thickness B of the coil 40 in the direction of the rotation center axis of the rotor 20 (see FIG. 3). The pin portion 32 engages with a concave engagement portion 71 formed at the end of the blade 70, and the swing of the pin portion 32 is transmitted to the blade 70. The engaging portion 71 is formed so as to sandwich the pin portion 32 from the side portion.

下基板５０及び上基板６０は、それぞれ撮影用の開口５１、６１を有し、下基板５０と上基板６０との間に配置された羽根７０の駆動により開口５１は全閉又は全開状態となる。尚、図３に示した、下基板５０の下方には、図示していないが、被写体側からの像を結像する撮像素子が配置されている。   The lower substrate 50 and the upper substrate 60 have photographing openings 51 and 61, respectively, and the opening 51 is fully closed or fully opened by driving a blade 70 disposed between the lower substrate 50 and the upper substrate 60. . In addition, although not shown in the figure, the image pick-up element which forms the image from a to-be-photographed object side is arrange | positioned under the lower board | substrate 50 shown in FIG.

上基板６０には、出力部材３０に設けられたピン部３２の回動を逃がすための逃げ孔６２が円弧状に形成され、ピン部３２は逃げ孔６２に貫通して所定範囲の揺動が許容される。   In the upper substrate 60, an escape hole 62 for releasing the rotation of the pin portion 32 provided in the output member 30 is formed in an arc shape, and the pin portion 32 penetrates the escape hole 62 and swings within a predetermined range. Permissible.

羽根７０は、下基板５０に形成された軸部５３と係合して、軸部５３を中心として所定の範囲を揺動自在に支持されている。これにより羽根７０は出力部材３０に設けられたピン部３２が係合部７１と係合することにより基板５０に形成された軸部５３を中心に所定の範囲を揺動する。   The blade 70 is engaged with a shaft portion 53 formed on the lower substrate 50 and is supported so as to be swingable within a predetermined range around the shaft portion 53. Accordingly, the blade 70 swings within a predetermined range around the shaft portion 53 formed on the substrate 50 when the pin portion 32 provided on the output member 30 engages with the engaging portion 71.

図３に示すように、羽根７０は、軸部５２と直交する平面内に配置されている。即ち、軸部５２の長さの厚みを有して、軸部５２に直交する空間内に配置されている。換言すれば、ロータ２０の厚み内に配置されている。そして前述したように、ロータ２０、腕部３１及びピン部３２は、ロータ２０の回動中心軸方向においてコイル４０の厚み内Ｂの範囲で配置されている。従って、従来のように、羽根をロータの回動軸線方向上に重ねて配置した場合と比較し、カメラ用シャッタ駆動装置の軸線方向の厚みを減少することができる。これにより、カメラ用シャッタ駆動装置の薄型化を図ることができる。また、本実施例に係るカメラ用シャッタ駆動装置において、ロータ２０の回動中心軸方向におけるコイル４０の厚み範囲Ｂと電磁アクチュエータを保持するための下基板５０の厚みの和がカメラ用シャッタ駆動装置の厚みとなるので、上記コイル４０の厚みと下基板５０の厚みの和を小さくすることによって、更に薄型化されたカメラ用シャッタ駆動装置を提供することができる。   As shown in FIG. 3, the blades 70 are arranged in a plane orthogonal to the shaft portion 52. That is, the shaft portion 52 has a thickness that is the same as that of the shaft portion 52 and is disposed in a space orthogonal to the shaft portion 52. In other words, it is disposed within the thickness of the rotor 20. As described above, the rotor 20, the arm portion 31, and the pin portion 32 are arranged within a range B within the thickness of the coil 40 in the rotation center axis direction of the rotor 20. Therefore, the thickness in the axial direction of the camera shutter driving device can be reduced as compared with the case where the blades are arranged so as to overlap with each other on the rotational axis direction of the rotor as in the prior art. Thereby, it is possible to reduce the thickness of the camera shutter driving device. In the camera shutter driving device according to the present embodiment, the sum of the thickness range B of the coil 40 in the direction of the rotation center axis of the rotor 20 and the thickness of the lower substrate 50 for holding the electromagnetic actuator is the camera shutter driving device. Therefore, by reducing the sum of the thickness of the coil 40 and the thickness of the lower substrate 50, it is possible to provide a camera shutter driving device that is further reduced in thickness.

また、図３に示すように、ロータ２０と、腕部３１及び腕部３１から立設されたピン部３２は別部材で形成されている。この構成により、ロータ２０に対する出力部材３０の角度位置を調節して圧入することができる。即ち、ロータ２０は外周方向に複数の極性に着磁されているため、ロータ２０の磁極の位置に対して出力部材３０の角度位置を調節して圧入することができる。これにより容易に角度位置の設計変更をすることができる。従って、カメラ用羽根駆動装置を設計する段階で、他の部品等の配置位置を優先して設計し、その後にロータ２０に対する出力部材３０の角度位置の設定を変更、調整することが可能となる。また、量産前の製品のチェックにより問題が生じたような場合、直ちにロータ２０に対する出力部材３０の角度位置を検討し、最適な角度位置へと変更することも可能となる。 Further, as shown in FIG. 3, the rotor 20, the arm portion 31, and the pin portion 32 erected from the arm portion 31 are formed as separate members. With this configuration, the angular position of the output member 30 with respect to the rotor 20 can be adjusted and press-fitted. That is, since the rotor 20 is magnetized in a plurality of polarities in the outer circumferential direction, the angular position of the output member 30 can be adjusted and press-fitted with respect to the magnetic pole position of the rotor 20. Thereby, the design of the angular position can be easily changed. Therefore, at the stage of designing the camera blade driving device, it is possible to preferentially design the arrangement position of other components and thereafter change and adjust the setting of the angular position of the output member 30 with respect to the rotor 20. . In addition, when a problem occurs due to a check of a product before mass production, the angular position of the output member 30 with respect to the rotor 20 can be immediately examined and changed to an optimal angular position.

また、下基板５０は撮影用の開口の他に、ピン部３２の回動を逃がすための大きな開口部を設ける必要がない。つまり、ピン部３２の回動を逃がすための開口部は上基板６０のみに設けられている。この構成により、外部から羽根室へのゴミの進入を少なくすることができる。また、上基板６０に形成された逃げ孔６２を廃止することにより外部からのゴミの進入をさらに防止することができる。 Further, the lower substrate 50 does not need to be provided with a large opening for releasing the rotation of the pin portion 32 in addition to the opening for photographing. That is, an opening for allowing the pin portion 32 to rotate is provided only in the upper substrate 60. With this configuration, entry of dust from the outside into the blade chamber can be reduced. Further, by eliminating the escape holes 62 formed in the upper substrate 60, it is possible to further prevent dust from entering from the outside.

また、羽根７０を上記のような位置に配置するためには、出力部材３０のピン部３２を、従来とは相反する方向に向けて立設する必要がある。即ち、従来は、ロータ２０から離れる方向に向けてピン部３２が立設されていたが、本実施例に係るカメラ用シャッタ駆動装置では、軸部２０と直交する平面内に配置された羽根７０に向けて立設されている。換言すれば、ピン部３２は、出力ピン３０が固定されたロータ２０の端部とは異なる他の端部側に向けて立設されている。この構成によって、ロータ２０の駆動を羽根７０に伝達することができる。ピン部３２は、軸部２０と直交する平面内に収まるように形成されている。   Moreover, in order to arrange the blades 70 at the positions as described above, the pin portion 32 of the output member 30 needs to be erected in a direction opposite to the conventional case. That is, conventionally, the pin portion 32 is erected in a direction away from the rotor 20. However, in the camera shutter driving device according to the present embodiment, the blade 70 disposed in a plane orthogonal to the shaft portion 20. It is erected towards. In other words, the pin portion 32 is erected toward the other end portion side different from the end portion of the rotor 20 to which the output pin 30 is fixed. With this configuration, the drive of the rotor 20 can be transmitted to the blades 70. The pin portion 32 is formed so as to be within a plane orthogonal to the shaft portion 20.

また、前述したように羽根７０は、羽根室を構成する上基板６０と下基板５０との間に配置されている。また、上基板６０及び下基板５０は、電磁アクチュエータを保持する。従って従来、羽根を保持するための部材（例えば羽根押え板）などを、別途設ける必要があったが、このような構成を採用することにより、上基板６０及び下基板５０によって、電磁アクチュエータを保持すると共に羽根７０を保持することができる。このため、更に軸線方向の厚みを減少することができると共に、部品点数を削減することができる。   Further, as described above, the blade 70 is disposed between the upper substrate 60 and the lower substrate 50 constituting the blade chamber. Further, the upper substrate 60 and the lower substrate 50 hold an electromagnetic actuator. Therefore, conventionally, it has been necessary to separately provide a member (for example, a blade pressing plate) for holding the blades. By adopting such a configuration, the electromagnetic actuator is held by the upper substrate 60 and the lower substrate 50. And the blade 70 can be held. For this reason, the thickness in the axial direction can be further reduced, and the number of parts can be reduced.

以上本発明の好ましい一実施形態について詳述したが、本発明は係る特定の実施形態に限定されるものではなく、特許請求の範囲に記載された本発明の要旨の範囲内において、種々の変形・変更が可能である。   The preferred embodiment of the present invention has been described in detail above, but the present invention is not limited to the specific embodiment, and various modifications can be made within the scope of the gist of the present invention described in the claims.・ Change is possible.

上記実施例において、上基板６０が被写体側となる実施例を詳述したが、下基板５０が被写体側となってもよい。   In the above embodiment, the embodiment in which the upper substrate 60 is on the subject side has been described in detail, but the lower substrate 50 may be on the subject side.

撮影用の開口が全開状態でのカメラ用シャッタ駆動装置の正面図である。It is a front view of the shutter drive device for cameras in the case where the opening for photographing is fully opened. 撮影用の開口が全閉状態でのカメラ用シャッタ駆動装置の正面図である。It is a front view of the shutter drive device for cameras in the case where the opening for photographing is fully closed. 図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 本発明の他の実施例を示す、図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 1 which shows the other Example of this invention. 従来のカメラ用シャッタ駆動装置の構成を示す断面図である。It is sectional drawing which shows the structure of the conventional shutter drive apparatus for cameras.

符号の説明Explanation of symbols

１０ ステータ
１１ 第１磁極部
１２ 第２磁極部
２０、８０ ロータ
３０ 出力部材
３１ 腕部
３２ ピン部
４０ コイル
４１ コイルボビン
５０ 下基板
５１、６１ 開口
５２、５３ 軸部
５４ 側壁
５５ 位置決めピン部
６０ 上基板
６２ 逃げ孔
６３ 孔部
７０ 羽根 DESCRIPTION OF SYMBOLS 10 Stator 11 1st magnetic pole part 12 2nd magnetic pole part 20, 80 Rotor 30 Output member 31 Arm part 32 Pin part 40 Coil 41 Coil bobbin 50 Lower board 51, 61 Opening 52, 53 Shaft part 54 Side wall 55 Positioning pin part 60 Upper board 62 Escape hole 63 Hole 70 Blade

Claims (3)

開口を有する基板と、前記基板に設けられ、前記開口を開閉する羽根と、前記基板に設けられ、前記羽根を駆動する駆動源とを備え、
前記駆動源は、周方向に複数の磁極に着磁され、軸を中心に回動可能なロータと、前記ロータに対して磁力を生じるステータと、前記ステータに設けられ、前記ステータを励磁するコイルとを含み、
前記ロータは、前記ロータの回動中心から外側へ延伸する腕部と、前記羽根と係合し前記腕部に立設したピン部とを有し、
前記ロータ、前記腕部及び前記ピン部は、前記軸方向において前記コイルの厚み内に配置され、
前記コイルの厚みの方向は、前記ロータの軸方向に平行である、ことを特徴とするカメラ用羽根駆動装置。 A substrate having an opening; a blade provided on the substrate for opening and closing the opening; and a drive source provided on the substrate for driving the blade;
The drive source is magnetized by a plurality of magnetic poles in the circumferential direction and is rotatable about an axis; a stator that generates a magnetic force with respect to the rotor; and a coil that is provided in the stator and excites the stator Including
The rotor has an arm portion extending outward from the rotation center of the rotor, and a pin portion that is engaged with the blade and is erected on the arm portion,
The rotor, the arm portion, and the pin portion are disposed within the thickness of the coil in the axial direction,
The direction of the thickness of the said coil is parallel to the axial direction of the said rotor, The blade drive device for cameras characterized by the above-mentioned . 前記ロータと腕部とは、別部材で形成されている、ことを特徴とする請求項１に記載のカメラ用羽根駆動装置。   The camera blade driving device according to claim 1, wherein the rotor and the arm are formed of different members. 前記駆動源を保持する上基板及び下基板を備え、
前記羽根は、前記上基板及び下基板の間で保持される、ことを特徴とする請求項１又は２に記載のカメラ用羽駆動装置。 An upper substrate and a lower substrate for holding the drive source;
The camera blade drive device according to claim 1, wherein the blade is held between the upper substrate and the lower substrate.
JP2006341597A 2006-12-19 2006-12-19 Camera blade drive Expired - Fee Related JP4781251B2 (en)

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JP2006341597A JP4781251B2 (en) 2006-12-19 2006-12-19 Camera blade drive
KR1020097002760A KR101055433B1 (en) 2006-12-19 2007-12-12 Wing Drive for Camera
PCT/JP2007/073951 WO2008075597A1 (en) 2006-12-19 2007-12-12 Blade drive device for camera
CN2007800351928A CN101517476B (en) 2006-12-19 2007-12-12 Shutter drive device for camera
US12/365,454 US7670069B2 (en) 2006-12-19 2009-02-04 Shutter drive device for camera

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US20090148154A1 (en) 2009-06-11
KR101055433B1 (en) 2011-08-08
KR20090056971A (en) 2009-06-03

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